China firm defiant over cyberattack role

BEIJING — A Chinese electronics-maker that has recalled millions of products sold in the United States said Tuesday it did all it could to prevent a cyberattack last week that briefly blocked access to websites including Twitter and Netflix.

Hangzhou Xiongmai Technology has said millions of Web-connected cameras and digital recorders became compromised because customers failed to change their default passwords.

Liu Yuexin, Xiongmai’s marketing director, told The Associated Press that Xiongmai and other companies across the home surveillance equipment industry were made aware of the vulnerability in April 2015. Liu said Xiongmai moved quickly to plug the gaps and should not be singled out for criticism.

“We don’t know why there is a spear squarely pointed at our chest,” Liu said.

Xiongmai downplayed its culpability this week, saying in a statement that as even the world’s largest technology companies experience security lapses, “we are not afraid to also experience it once.”

The company also slammed as “completely untrue, malicious and defamatory” reports about its products and appended to its statement a letter from its lawyers threatening litigation.

The hack has heightened long-standing fears among security experts that the rising number of interconnected home gadgets, appliances and even automobiles represent a cybersecurity nightmare. The convenience of being able to control home electronics via the Web also leaves them more vulnerable to malicious intruders, experts say.

Unidentified hackers seized control of gadgets including Xiongmai’s on Friday and directed them to start an attack that temporarily disrupted access to a host of sites, ranging from Twitter and Netflix to Amazon and Spotify, according to U.S.-cybersecurity researchers.

The “distributed denial-of-service” attack targeted servers run by Dyn Inc., an Internet company located in Manchester, N.H. These types of attacks work by overwhelming targeted computers with junk data so that legitimate traffic can’t get through.

“The issue with the consumer-connected device is that there is nearly no firewall between devices and the public Internet,” said Tracy Tsai, an analyst at Gartner, adding that many consumers leave the default setting on devices for ease of use without knowing the dangers.

Researchers at the New York-based cybersecurity firm Flashpoint said most of the junk traffic heaped on Dyn came from Internetconnected cameras and video-recording devices that had components made by Xiongmai. Those components had little security protection, so devices they went into became easy to exploit.

In an acknowledgement of its products’ role in the hack, Xiongmai said in a statement Monday that it would recall products sold in the United States before April 2015 to demonstrate “social responsibility.” It said products sold after that date had been patched and no longer constitute a danger.

The company, which also makes dashboard cameras and computer chips, said it would recall more than 4 million Web-connected cameras and has offered customers a software security fix. The recall will apply only to devices sold under Xiongmai’s name. As an original equipment manufacturer, close to 95 percent of the company’s products are sold by other firms that repackage its devices under their own brand names, said Liu, the marketing director.

Xiongmai and Dahua, a video surveillance manufacturer also based in the eastern Chinese tech hub of Hangzhou, first came under scrutiny several weeks ago after Flashpoint assessed that hackers had controlled their devices to attack the website of cybersecurity writer Brian Krebs, among other targets. Dahua has responded by saying it is dedicated to testing vulnerabilities, and has offered discounts for replacement equipment.

Mark James, an expert with Slovakia-based security company ESET, said that he doubted Xiongmai could be held liable for an attack such as Friday’s, but that the company’s officials “obviously recognize a concern here.”

“Hopefully other manufacturers will follow suit and take a look at what they can do to increase security of their own products,” he said.